Question

in jQuery i tried:

$('#imgAdd').live("click", function() {
    if ($('#txtName').val() == "") {
        $('#lblError').show();
        $('#lblError').text() = "Please enter a  Name";
        $('#txtMenuName').focus();
    }
    return false;
} 

but i got a error in console.

invalid assignment left-hand side
$(‘#lblError’).text() = “Please enter a Menu Name”;

I also want if text is entered in field automatically lblerror is hide. How do I achieve this?

Answer 1

Use:

$('#lblError').text("Please enter a Menu Name");

text() function is both a getter and a setter function. Thus, if you call it without parameters, you get the current text of the HTML element. But if you pass a parameter to it, you set the text of the HTML element.

For hiding the error message, when user enters text into textbox, you can use keyup event handler of jQuery:

$('#txtName').keyup(function(e){
   if($(this).val().length > 0) {
       $('#lblError').hide();
   }
});